Portal:Energy
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Introduction
Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the capacity to do work and in the form of heat and light. Energy is a conserved quantity—the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J).
Forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, the internal energy contained within a thermodynamic system, and rest energy associated with an object's rest mass. These are not mutually exclusive.
All living organisms constantly take in and release energy. The Earth's climate and ecosystems processes are driven primarily by radiant energy from the Sun. (Full article...)
Selected article
The Organization of the Petroleum Exporting Countries (OPEC /ˈoʊpɛk/ OH-pek) is an organization enabling the co-operation of leading oil-producing and oil-dependent countries in order to collectively influence the global oil market and maximize profit. It was founded on 14 September 1960 in Baghdad by the first five members: Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. The organization, which currently comprises 12 member countries, accounted for 38 percent of global oil production in 2022. It is estimated that 79.5 percent of the world's proven oil reserves are located within OPEC nations, with the Middle East alone accounting for 67.2 percent of OPEC's total reserves.
In a series of steps in the 1960s and 1970s, OPEC restructured the global system of oil production in favor of oil-producing states and away from an oligopoly of dominant Anglo-American oil firms, the "Seven Sisters". In the 1970s, restrictions in oil production led to a dramatic rise in oil prices with long-lasting and far-reaching consequences for the global economy. Since the 1980s, OPEC has had a limited impact on world oil-supply and oil-price stability, as there is frequent cheating by members on their commitments to one another, and as member commitments reflect what they would do even in the absence of OPEC. (Full article...)
Selected image
Photo credit: From an image by Wolfgang Beyer
Strombolian volcanic eruptions can eject incandescent cinder, lapilli and lava bombs to altitudes of tens to hundreds of meters.
Did you know?
- Samuel Andrews (1836–1904) was an English-born chemist and inventor whose request for investment capital to build an oil refinery in 1862 led to a partnership with John D. Rockefeller and the formation of the Standard Oil companies?
- Golar Spirit (pictured) is the world's first floating storage and regasification vessel converted from a LNG carrier?
- The Rockies Express Pipeline, currently under construction, will be one of the largest natural gas pipelines ever built in North America?
- Syncrude Canada Ltd. is the world's largest producer of synthetic crude oil from oil sands?
- During World War II, Australia produced almost 500,000 barrels of shale oil by operating the Nevada–Texas–Utah type of oil-shale retorts?
- The Sangtuda 1 Hydroelectric Power Plant is expected to provide up to 12% of the total energy output of Tajikistan?
Selected biography
Born in Ireland, Thomson studied at the University of Glasgow, Scotland. On graduating, he became a mathematics teacher at the Royal Belfast Academical Institution. During his life Thomson published more than 600 scientific papers and filed over 70 patents.
As early as 1845 Thomson pointed out that the experimental results of William Snow Harris were in accordance with the laws of Coulomb. Over the period 1855 to 1867, Thomson collaborated with Peter Guthrie Tait the Treatise on Natural Philosophy that unified the various branches of physical science under the common principle of energy. His inventions included the current balance for the precise specification of the ampere, the standard unit of electric current.
In 1893, Thomson headed an international commission to decide on the design of the Niagara Falls power station. Despite his previous belief in the superiority of direct current electric power transmission, he agreed to use alternating current after seeing a Westinghouse demonstration at the Chicago World's Fair.
In the news
- 13 March 2026 – Economic impact of the 2026 Iran war
- Saudi Arabia cuts oil production by 20% after the shutdown of two offshore oil fields, including Safaniya. (Reuters)
- 13 March 2026 – El Salvador–United States relations, Nuclear power in El Salvador
- El Salvador and the United States sign Agreement 123 under the Atomic Energy Act of 1954 to build a nuclear power plant in El Salvador that is planned to be operational by 2030. (El Mundo in Spanish)
- 12 March 2026 – Middle Eastern crisis
- An Iranian strike hits fuel storage tanks at a facility in Muharraq Governorate, Bahrain. (Qatar News Agency)
- 12 March 2026 – Economic impact of the 2026 Iran war, Embargo of Russian oil during the Russo-Ukrainian war
- The United States treasury department issues a temporary license permitting the delivery and sale of Russian oil and petroleum products already loaded onto vessels before March 12, easing sanctions on such shipments until April 11 amid rising global energy prices. (AFP via Philippine Daily Inquirer)
- 11 March 2026 – Economic impact of the 2026 Iran war
- The International Energy Agency agrees to discharge 400 million barrels of oil from its members’ strategic reserves, its largest-ever release, to counter soaring global energy prices due to the war. Despite the measure, the price of the crude barrel rises above US$100 again in international markets. (Al Jazeera) (Forbes)
General images
Quotations
- "Our children will enjoy in their homes electrical energy too cheap to meter." – Lewis Lichtenstein Strauss, 1954
- "There is every possibility that you will soon be able to tax it." – Michael Faraday, talking to William Gladstone on the future purpose of electricity.
- "Higher energy prices act like a tax. They reduce the disposable income people have available for other things after they've paid their energy bills." – John W. Snow, 2005
- "Our dependence on foreign energy is like a foreign tax on the American people." – George W. Bush, 2005
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WikiProjects
WikiProjects connected with energy:
- WikiProject Energy
- Oil megaprojects task force
Other WikiProjects that may be of interest:
- WikiProject Environment
- WikiProject Technology
- WikiProject Biography
Major topics
Major categories
National energy supply, use & conservation
- Energy by country
National electricity sector
- Electric power by country
Politics, economics, environment
- Climate change
- Energy conservation
- Energy economics
- Energy crises
- Energy development
- Energy policy
- Peak oil
Energy sources
- Fuels
- Biofuels
- Fossil fuels
- Fusion power
- Nuclear technology
- Renewable energy
- Energy conversion
- Electric power
- Energy storage
Energy-related design
- Electric vehicles
- Hybrid vehicles
- Low-energy building
- Solar design
Scientific usage
- Heat transfer
- Thermodynamics
- Units of energy
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